Brake attachment for sewing-machines.



M. BONO; l

BRAKE ATTACHMENT FOR SEWING MACHINES.

APPLICATION FIL'ED JUNE I?, T915. I

TME COLUMBIA PLANOGRAPH co., WASHINGTON D, c.

iran entras PATENT MICHELANGELO Bo-No,

FFIQE.

or NEW'YORK, N. Y.

BRAKE ATTACHMENTYFOR sEwING-MACHINES.

Specication of Letters Patent.

Patented Feb. 15, 1916.

Application led June 17, 1915. Serial No. 34,634.

Sewing-Machines, of which the following is This invention relates to an attachment for sewing machines by means of which the operator can readily brake the hand wheel withhis elbow, and without changing his position. In this way the necessity of grasping the wheel for the purpose of stopping or slowing down the machine is obviated, so that the braking manipulation is greatly :tacilitated.

In the accompanying drawing: Figure 1 is a side view of a brake attachment embodying my invention; Fig. 2 a front elevation; Fig. 3 a plan; Fig. 4 a detailof the link and adjoining parts; Fig. 5 a section on line 5 5 Fig. 4 and Fig.- 6 a detail of the slidable clasp.

From the table or` support l of the sewing machine, projects the head 2, carrying thev hand wheel 3 as usual. To the end of head 2 there is pivoted at 4 a leverl or movable member 5 the rear end of which is adapted to be drawn down by a spring 6. To leveri 5.

is secured by screws 7, a brake beam 8 having a pair of slots 9, for accommodating the screws. This beam bears the brake shoe 10, which is preferably made of rubber or similar exible material, and which is adapted to engage wheel 3. By means of screws 7, and slots 9, the d ip of the brake beam may be adjusted, so that in this way the shoe may be set -to engage the wheel at the most eective angle, while furthermore suchv adjustment may be changed whenever the shoe has become worn. The front of lever 5 is apertured for the reception of a pin 11, having an upper threaded section which is engaged by the correspondingly threaded hollowed shank of a nut 12. The lower end of pin 11, extends below lever 5 and is provided with an elongated foot 13, passing through a correspondingly elongated slot 14, which is formed in the upper bent part of a link or member 15. Normally, foot 13 extends transversely across slot 14, so that in this way the link is operatively connected tothe lever. Link 15 projects downwardly through a slot of table 1, and is here furnished with a hook 16. which is engaged by a transverse c lever 17 extending along `the right side of table l and pivoted at its rearend to said 'Y table by staple 18. The front end of transverse lever 17, is interlocked with a longitudinal lever 19 extending along the front of table 1, and pivoted at its left end to said table by a staple 20. Lever 19 is loosely straddled by a slidable clasp 21, having a grooved seat 22, that receives an axially slidable shank 23 which projects with its rear end beneath the table, while its front end extends a distance therebeyond vand is provided withl a tapped eye 24. Thiseye receives the threaded-stem 25 of avertically Amovable button or operative lelement 26, ar-

ranged in proximity to the front edge of the table` and adapted to be engaged by elbow of the operators right arm, while said arm is resting upon the table. IVhen the latter presses upon the button which by the construction described islocated in proximityV to the plane of the table at the edge thereof, he will by shank 23, levers 19, 17 and link 15, tilt lever 5, on pivot 4, so as to throw shoe 10 against wheel 3 and brake the machine.v Then the operator releases the button, the parts will be returned to their normal or inactive position by means of the spring 6 the hand wheel 3 thus constituting likewise a brake wheel.

The device besides furnishing means for adjusting the tilt of the bra-ke beams, is capable of various other adjustments. Thus by turning nut l2, lever 5 may be so set as to carry the brake shoe nearer to or farther away from wheel 3, so that in this way, the play of the brake shoe may be regulated.

The laterally slidable clasp 21 together with the longitudinally slidable shank 23, permits button 26 to be so set, asto be well underthe elbows of'operators having different arm-lengths, while by turning the button, 26, the height to which it projects above the table, may be changed. Whenever it is desired to throw the head of the machine back, pin 11 is so turned as to bring its foot 13 into alinement with slot 14 of link 15 whereby that part of the device whichis carried by the head will become disconnected `from, that part which is carried by the table, so that in this way, the head may be moved independently of the table.

I claim:

1. A `brake attachment for sewing machines comprising a support, a machine head mounted thereon, a brake wheel carried by the head, a movable member operatively I connected tothe head, a brake shoe carried by said member and adapted to engage the Wheel, and a vertically movable operative element arranged in proximity to the plane of the support at the edge thereof and operatively connected to said movable member.

2. A brake attachment for sewing machines comprising a support, a .machine headmounted thereon, a brake Wheel carried by the head, a lever pivoted to the head, a brake shoe mounted on the lever and adapted to engage the Wheel, and a vertically movable operative element arranged in proximity to the plane of the support at the edge thereof and operatively connected to said lever.

3. A brake attachment for sevving machines comprising a support, a machine head mounted thereon, a brake Wheel carried by the head, a lever pivoted to the head, a brake beam adjustably secured to the lever, a brake shoe seated on said beam and adapted to engage the Wheel, and an operative element arranged in proximity to the plane of the support at the edge thereof and operatively connected to said lever.

4. A brake attachment for sewing machines comprising a lever fitted to a sewing machine head, a brake kshoe operatively connected to said lever, a threaded pin engaging the lever and having an elongated foot, a nut carried by the pin, a link having an elongated slot engaged by said foot, a lever operatively connected to the link, and armcontrolled means located at the front of the sewing machine table for operating said last named lever.

5. A brake attachment for sewing machines comprising a lever itted to a sewing machine head, a brake shoe operatively connected to said lever, a link depending from the lever, a transversely arrranged lever engaging the link, a longitudinally arranged lever extending along the front of the table and engaging the transverse lever, and an arm-controlled button operatively connected to the longitudinal lever.

6. A brake attachment for sewing machines comprising a lever fitted to a sewing machine head, a brake shoe operatively conn nected to said lever, a link depending from the lever extending along the front of the table and a longitudinally arranged lever operatively connected to the link, a clasp movably mounted on the longitudinal lever, and an arm-controlled button having a shank that engages said clasp.

7. A brake attachment for sewing machines comprising a lever fitted to a sewing machine head, a brake beam adjustably `mounted on the lever, a brake shoe carried by said beam, a link adjustably and removably secured to the lever, a transversely arranged lever engaging the link, a longitudinally arranged lever extending along the front of the table and engaging the transverse lever, a clasp movably mounted on the longitudinal lever, and an arm-controlled button having a shank that slidably engages the clasp.

MCHELANGELO BONO.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

